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प्रश्न
Choose the correct alternative:
Which of the following is a discrete random variable?
I. The number of cars crossing a particular signal in a day.
II. The number of customers in a queue to buy train tickets at a moment.
III. The time taken to complete a telephone call.
विकल्प
I and II
II only
III only
II and III
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उत्तर
I and II
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